Coloradoite is a rare silver sulfide mineral that is found in silver mines in Colorado, USA. It's also known as mercury telluride or silver telluride. There are few synonyms for Coloradoite, but the mineral could be described as a telluride mineral, with telluride being a group of minerals that contain the element tellurium. Other telluride minerals include calaverite, petzite, and sylvanite. Additionally, Coloradoite can be considered a sulfide mineral, with sulfide being another group of minerals that contain sulfur. Examples of sulfide minerals include pyrite, chalcopyrite, and galena. While Coloradoite may be uncommon, it's an interesting reminder of the abundance and diversity of minerals found on our planet.